The dominance of the dollar is not what it used to be in recent times. We're starting to witness nations like Russia and China pushing their way from the US dollar reserves.
They have been trying to do this and they have been failing with this mission. The Russia Federation has been broking its own economy by the war against Ukraine and they are in a way of severely downward fall. Consequence of the war, even it ends soon in next several months, will need many years for recovery to a status before 2022. China has been facing with big problems recent years and you are witnessing a collapse of Xi JinPing in the nation as consequence of his bad leadership there in more than one decade.
Are we starting to see Bitcoin emerge as a pillar in international reserves?
It won't.
Governments will only try to get benefit from Bitcoin but they will not let Bitcoin beating their own fiat currencies, it's just fact as they have something to defend and protect, which are their national fiat currencies.
Bitcoin will only be considered as a tool for governments to enrich their national treasury if possible, nothing more than that.